ASUS X51R Driver Download (Official)

ASUS Drivers

The X51R is a modem manufactured by ASUS. If you cannot connect to the network, or have slow transfer speeds or intermittent disconnection problems, you may need to update your modem driver or firmware. This driver - "" - has been downloaded 28 times and is rated 5 out of 5 stars based on 6 reviews. It is compatible with PCs running Windows XP, among other operating systems. The total disk space used for this update is 1.0 MB.

6 Ratings

Supported Models


Motorola SM56 Data Fax Modem




Supported Operating Systems

Windows XP

File Name

Versions (10-May-2007) (2006-08-07) via .inf

Additional Notes


X51 Series

Modem driver for WinXP

Uploaded By

Karthikkumar (DG Staff Member) on 15-May-2008

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
2KSETUP.EXE 127.0 KB 17 Jun 2004
2KSETUP.INI 123 bytes 7 Apr 2006
SmSerial.sys 980.6 KB 7 Aug 2006
sm56.reg 292.5 KB 15 Jun 2006
sm56brz.dll 65.5 KB 7 Aug 2006
sm56chs.dll 53.2 KB 7 Aug 2006
sm56cht.dll 53.2 KB 7 Aug 2006
sm56coin.dll 155.6 KB 7 Aug 2006
sm56dnk.dll 61.4 KB 7 Aug 2006
sm56eng.dll 69.6 KB 7 Aug 2006
sm56esp.dll 65.5 KB 7 Aug 2006
sm56fra.dll 65.5 KB 7 Aug 2006
sm56ger.dll 65.5 KB 7 Aug 2006
sm56hlpr.exe 573.4 KB 7 Aug 2006
sm56ita.dll 65.5 KB 7 Aug 2006
sm56jpn.dll 53.2 KB 7 Aug 2006
sm56kor.dll 53.2 KB 7 Aug 2006 22.1 KB 10 Aug 2006
smserial.inf 58.5 KB 7 Aug 2006

How to Update X51R Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the X51R driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter ASUS X51R into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the ASUS Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the ASUS website. Most major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with ASUS. All company names/logos are properties of their owners.
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